// 弹性布局
.flex {
  display: flex;
}
.flex1 {
  flex: 1;
}
.flex-wrap {
  flex-wrap: wrap;
}
.flex-nowrap {
  flex-wrap: nowrap;
}
.flex-col {
  flex-direction: column;
}
.just-start {
  justify-content: flex-start;
}
.just-cent {
  justify-content: center;
}
.just-end {
  justify-content: flex-end;
}
.just-spa-bet {
  justify-content: space-between;
}
.just-spa-aro {
  justify-content: space-around;
}
.ali-sta {
  align-items: flex-start;
}
.ali-end {
  align-items: flex-end;
}
.ali-cen {
  align-items: center;
}

.self-start {
  align-self: flex-start;
}
.self-center {
  align-self: center;
}
.self-end {
  align-self: flex-end;
}